diff options
Diffstat (limited to 'arch/powerpc/mm/dump_sr.c')
| -rw-r--r-- | arch/powerpc/mm/dump_sr.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/arch/powerpc/mm/dump_sr.c b/arch/powerpc/mm/dump_sr.c deleted file mode 100644 index 501843664bb9..000000000000 --- a/arch/powerpc/mm/dump_sr.c +++ /dev/null @@ -1,64 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright 2018, Christophe Leroy CS S.I. - * <christophe.leroy@c-s.fr> - * - * This dumps the content of Segment Registers - */ - -#include <asm/debugfs.h> - -static void seg_show(struct seq_file *m, int i) -{ - u32 val = mfsrin(i << 28); - - seq_printf(m, "0x%01x0000000-0x%01xfffffff ", i, i); - seq_printf(m, "Kern key %d ", (val >> 30) & 1); - seq_printf(m, "User key %d ", (val >> 29) & 1); - if (val & 0x80000000) { - seq_printf(m, "Device 0x%03x", (val >> 20) & 0x1ff); - seq_printf(m, "-0x%05x", val & 0xfffff); - } else { - if (val & 0x10000000) - seq_puts(m, "No Exec "); - seq_printf(m, "VSID 0x%06x", val & 0xffffff); - } - seq_puts(m, "\n"); -} - -static int sr_show(struct seq_file *m, void *v) -{ - int i; - - seq_puts(m, "---[ User Segments ]---\n"); - for (i = 0; i < TASK_SIZE >> 28; i++) - seg_show(m, i); - - seq_puts(m, "\n---[ Kernel Segments ]---\n"); - for (; i < 16; i++) - seg_show(m, i); - - return 0; -} - -static int sr_open(struct inode *inode, struct file *file) -{ - return single_open(file, sr_show, NULL); -} - -static const struct file_operations sr_fops = { - .open = sr_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init sr_init(void) -{ - struct dentry *debugfs_file; - - debugfs_file = debugfs_create_file("segment_registers", 0400, - powerpc_debugfs_root, NULL, &sr_fops); - return debugfs_file ? 0 : -ENOMEM; -} -device_initcall(sr_init); |
